Question

A flight attendant pulls a 60.0 N flight bag a distance of 239.0 m along a level airport floor at a constant speed. A 21.0 N force is exerted on the bag at an angle of 66.0 degrees above the horizontal. How much work is done on the flight bag?

Answer 1

Answer:

The work done on the flight bag = 2041.23 J

Explanation:

Work : This can be defined as the product of the force move with distance along the direction of the force. The S.I unit of work is Joules (J)

W = F × d ............ Equation 1

Where W = work done on the flight bag, F = horizontal force exerted on the bag, d = distance.

But,

F = F₁cos∅................................. Equation 2

Where F₁ = force exerted on the bag, ∅ = angle the force makes with the horizontal

Substituting equation 2 into equation 1.

W = F₁cos∅×d..................... Equation 3

Given: F₁ = 21.0 N, ∅ = 66 °C, d = 239 m.

Substituting these values into equation 3

W = 21(cos66)×239

W = 21 ×0.4067×239

W = 2041.23 Joules.

Thus the work done on the flight bag = 2041.23 J